Quick way to fix the Port is Already in Use Error

Have you ever struggled with the the port is already in use error while starting the application?

A lot of times when we are using multiple applications or forget to stop the previous process, we get the the port is already in use error.

Then we try to find the process using that port and then kill it or maybe restart the machine.

There is an easier way to do it. Just execute the following command in the terminal:

npx kill-port port_number

and the process using that port will be killed.

For example,

npx kill-port 3000

will kill the process using port 3000.

To kill multiple ports pass the ports separated by space

npx kill-port 3000 5000 7000

kill-port in an npm package which helps in killing any specified port or multiple ports at once.

If you want, you can install the kill-port npm package on your machine by running the following command:

npm install -g kill-port

Mac/Linux users may need to add sudo in front of it like this: sudo npm install -g kill-port.

Once installed, you can just execute the kill-port 3000 to kill the process using port 3000.

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Yogesh Chavan